Operating instructions

6.2 Operating Modes
The RMC can be configured to manage different data flow paths de-
fined by the com1_mode environment variable. In Through mode (the
default), all data and control signals flow from the system COM1 port
through the RMC to the active external port. You can also set bypass
modes so that the signals partially or completely bypass the RMC. The
com1_mode environment variable can be set from either SRM or the
RMC. See Section 6.8.
Figure 6–1 Data Flow in Through Mode
System
Modem
SRM Console
Operating System
RMC Modem
Port (Remote)
Modem
RMC>
COM1
COM1 Port
UART
Modem Port
UART
RMC PIC
Processor
DUART
Remote Serial Terminal
or Terminal Emulator
MR0390
6-4 DS25 Owner’s Guide